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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0626a5d1fc787b782169c40ae6d91bc0001a0399d2dcd81867d62f52be684924' 
  AND token = 'O2mtmorMb8p7+i6tx+HsS8LgNGELJTs+ZG+9w6p5Tlw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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