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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7b1cbc1a5f302f0b40dd3f4359305ec2a97e69bf206a81ee3d00f2532a64167' 
  AND token = '4DNW2Q2Ex666hK64F1gmycdbq8o32O6MG8RHUfbOKos=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}