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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bc1095753808f3d8ffeea59cabe094f48eb26e564f78d15b7980b4301f0471b7' 
  AND token = 'TYjF6KNGCdXzbL9GKI3CN4JL9YUzAxGurd/OXSyteiU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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