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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0e848f7e23d4eba27f28a0e69091221d8aa15cf65311144f8e74a86886946a22' 
  AND token = 'Ge30N2kM+mJAkSzNoSs9YgZtaoBN9onPzxhvR8p8W5w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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